Overhead Reduction in Channel State Information Feedback

2. The method according to claim 1, wherein the shut-off pattern is executed in a frequency domain first and time domain second way; and/or wherein the suggested shut-off pattern is provided dynamically according to channel conditions.

3. The method according to claim 1, wherein determining the channel sparsity ratio comprises monitoring a downlink channel.

4. The method according to claim 1, wherein the shut-off ratio is determined based on a channel correlation time, a bandwidth value, a robustness adjustment ratio, and a physical resource block transmission time interval.

7. The method according to claim 1, further comprising receiving signaling indicating a reporting method at the mobile station.

9. The apparatus according to claim 8, wherein the shut-off pattern is executed in a frequency domain first and time domain second way.

10. The apparatus according to claim 8, wherein the suggested shut-off pattern is provided dynamically according to channel conditions.

11. The apparatus according to claim 8, wherein determining the channel sparsity ratio comprises monitoring a downlink channel.

12. The apparatus according to claim 8, wherein the shut-off ratio is determined based on a channel correlation time, a bandwidth value, a robustness adjustment ratio, and a physical resource block transmission time interval.

15. The apparatus according to claim 8, wherein the at least one memory and the computer program code are further configured, with the at least one processor to cause the apparatus at least to receive a signal indicating a reporting method at the apparatus.